82112177 has 4 divisors (see below), whose sum is σ = 93842496. Its totient is φ = 70381860.

The previous prime is 82112153. The next prime is 82112197. The reversal of 82112177 is 77121128.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 82112177 - 2⁶ = 82112113 is a prime.

It is a super-2 number, since 2×82112177² = 13484819223358658, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82112197) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5865149 + ... + 5865162.

It is an arithmetic number, because the mean of its divisors is an integer number (23460624).

Almost surely, 2^82112177 is an apocalyptic number.

It is an amenable number.

82112177 is a deficient number, since it is larger than the sum of its proper divisors (11730319).

82112177 is a wasteful number, since it uses less digits than its factorization.

82112177 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11730318.

The product of its digits is 1568, while the sum is 29.

The square root of 82112177 is about 9061.5769598895. The cubic root of 82112177 is about 434.6461684282.

The spelling of 82112177 in words is "eighty-two million, one hundred twelve thousand, one hundred seventy-seven".